The following table lists the commonly used sequence functions provided by XQuery.
| Sr.No | Name & Description |
|---|---|
| 1 | count Function Counts the items in a sequence. |
| 2 | sum Function Returns the sum of the items in a sequence. |
| 3 | avg Function Returns the average of the items in a sequence. |
| 4 | min Function Returns the minimum valued item in a sequence. |
| 5 | max Function Returns the maximum valued item in a sequence. |
| 6 | distinct-values Function Returns select distinct items from a sequence. |
| 7 | subsequence Function Returns a subset of provided sequence. |
| 8 | insert-before Function Inserts an item in a sequence. |
| 9 | remove Function Removes an item from a sequence. |
| 10 | reverse Function Returns the reversed sequence. |
| 11 | index-of function Returns indexes as integers to indicate availability of an item within a sequence. |
| 12 | last Function Returns the last element of a sequence when used in predicate expression. |
| 13 | position Function Used in FLOWR expressions to get the position of an item in a sequence. |